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16 package org.apache.log4j.gui;
17
18
19 import java.awt.Color  ;
20 import java.awt.Image ;
21 import java.awt.Toolkit ;
22 import java.io.*;
23 import java.net.URL ;
24 import java.util.Enumeration ;
25 import java.util.StringTokenizer ;
26 import java.util.Hashtable ;
27 import java.util.ArrayList ;
28
29 import javax.swing.JPanel ;
30
31 import org.apache.log4j.*;
32
33 import org.apache.log4j.spi.LoggingEvent;
34 import org.apache.log4j.helpers.Loader;
35 import org.apache.log4j.helpers.QuietWriter;
36 import org.apache.log4j.helpers.TracerPrintWriter;
37 import org.apache.log4j.helpers.OptionConverter;
38
39
40
44
45 public class TextPanelAppender extends AppenderSkeleton {
46
47 TracerPrintWriter tp;
48 StringWriter sw;
49 QuietWriter qw;
50 LogTextPanel logTextPanel;
51 LogPublishingThread logPublisher;
52
53 final String COLOR_OPTION_FATAL = "Color.Fatal";
54 final String COLOR_OPTION_ERROR = "Color.Error";
55 final String COLOR_OPTION_WARN = "Color.Warn";
56 final String COLOR_OPTION_INFO = "Color.Info";
57 final String COLOR_OPTION_DEBUG = "Color.Debug";
58 final String COLOR_OPTION_BACKGROUND = "Color.Background";
59 final String FONT_NAME_OPTION = "Font.Name";
60 final String FONT_SIZE_OPTION = "Font.Size";
61 final String EVENT_BUFFER_SIZE_OPTION = "EventBuffer.Size";
62
63 public TextPanelAppender(Layout layout, String name) {
64 this.layout = layout;
65 this.name = name;
66 this.sw = new StringWriter();
67 this.qw = new QuietWriter(sw, errorHandler);
68 this.tp = new TracerPrintWriter(qw);
69 setLogTextPanel(new LogTextPanel());
70 logPublisher = new LogPublishingThread(logTextPanel, Priority.ERROR, 500);
71 }
73
74 public
75 void close() {
76 }
77
78 public void append(LoggingEvent event) {
79
80 String text = this.layout.format(event);
81
82 if (event.throwable!=null) {
85 event.throwable.printStackTrace(tp);
86 for (int i=0; i< sw.getBuffer().length(); i++) {
87 if (sw.getBuffer().charAt(i)=='\t')
88 sw.getBuffer().replace(i,i+1," ");
89 }
90 text += sw.toString();
91 sw.getBuffer().delete(0,sw.getBuffer().length());
92 }
93 else
94 if(!text.endsWith("\n"))
95 text += "\n";
96
97 logPublisher.publishEvent(event.priority, text);
98 }
99
100 public
101 JPanel getLogTextPanel() {
102 return logTextPanel;
103 }
104
105 public
106 String [] getOptionStrings() {
107 return new String [] { COLOR_OPTION_FATAL, COLOR_OPTION_ERROR,
108 COLOR_OPTION_WARN, COLOR_OPTION_INFO, COLOR_OPTION_DEBUG,
109 COLOR_OPTION_BACKGROUND, FONT_NAME_OPTION, FONT_SIZE_OPTION};
110 }
111
112
113 public
114 void setName(String name) {
115 this.name = name;
116 }
117
118 protected
119 void setLogTextPanel(LogTextPanel logTextPanel) {
120 this.logTextPanel = logTextPanel;
121 logTextPanel.setTextBackground(Color.white);
122 }
123
124 public
125 void setOption(String option, String value) {
126 if (option.equalsIgnoreCase(COLOR_OPTION_FATAL))
127 logTextPanel.setTextColor(Priority.FATAL,value);
128 if (option.equalsIgnoreCase(COLOR_OPTION_ERROR))
129 logTextPanel.setTextColor(Priority.ERROR,value);
130 if (option.equalsIgnoreCase(COLOR_OPTION_WARN))
131 logTextPanel.setTextColor(Priority.WARN,value);
132 if (option.equalsIgnoreCase(COLOR_OPTION_INFO))
133 logTextPanel.setTextColor(Priority.INFO,value);
134 if (option.equalsIgnoreCase(COLOR_OPTION_DEBUG))
135 logTextPanel.setTextColor(Priority.DEBUG,value);
136 if (option.equalsIgnoreCase(COLOR_OPTION_BACKGROUND))
137 logTextPanel.setTextBackground(value);
138 if (option.equalsIgnoreCase(FONT_SIZE_OPTION))
139 logTextPanel.setTextFontSize(Integer.parseInt(value));
140 if (option.equalsIgnoreCase(FONT_NAME_OPTION))
141 logTextPanel.setTextFontName(value);
142 if (option.equalsIgnoreCase(EVENT_BUFFER_SIZE_OPTION))
143 logTextPanel.setEventBufferSize(Integer.parseInt(value));
144 return;
145 }
146
147 public
148 boolean requiresLayout() {
149 return true;
150 }
151
152
153
154 class LogPublishingThread extends Thread {
155
156 LogTextPanel logTextPanel;
157 ArrayList evts;
158 Priority triggerPrio;
159 long pubInterval;
160
161 public LogPublishingThread(LogTextPanel logTextPanel, Priority triggerPrio, long pubInterval) {
162 this.logTextPanel = logTextPanel;
163 this.evts = new ArrayList (1000);
164 this.triggerPrio = triggerPrio;
165 this.pubInterval = pubInterval;
166 this.start();
168 }
169
170 public void run() {
171 while(true) {
172 synchronized(evts) {
173 try {
174 evts.wait(pubInterval);
175 }
176 catch(InterruptedException e) {}
177
178 logTextPanel.newEvents((EventBufferElement[])evts.toArray(new EventBufferElement[evts.size()]));
179
180 evts.clear();
181 }
182 }
183
184 }
185
186 public void publishEvent(Priority prio, String text) {
187 synchronized(evts) {
188 evts.add(new EventBufferElement(prio, text));
189 if(triggerPrio != null && prio.isGreaterOrEqual(triggerPrio))
190 evts.notify();
191 }
192 }
193 }
194
195 }
197 class EventBufferElement {
198
199 public String text;
200 public Priority prio;
201 public int numLines;
202
203 EventBufferElement(Priority prio, String text) {
204 this.prio = prio;
205 this.text = text;
206 numLines = 1;
207 int pos = pos = text.indexOf('\n', 0);
208 int len = text.length() - 1;
209
210 while( (pos > 0) && (pos < len) )
211 numLines++;
212 pos = text.indexOf('\n', pos + 1);
213 }
214 }
215
216
217 |
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